v0.12.7: mandatory HDD backup, pre-dump, restore for all apps

Fix 1: HDD data backup is now mandatory for all deployed apps.
resolveAppBackupPaths() iterates ListDeployedStacks() directly — no
longer reads GetAppBackupMap() or checks the Enabled flag. DiscoverAppData()
drops backupPrefs parameter; BackupEnabled is set from HasHDDData.
Five dead settings methods removed: IsAppBackupEnabled, SetAppBackup,
GetAppBackupMap, SetAppBackupBulk, GetAppBackupPrefs.

Fix 2: Cross-drive backup now triggers a fresh DB dump (DumpStackDB)
before running. DBDumper interface added to crossdrive.go; Manager
implements it; SetDBDumper wired in main.go. Non-fatal — proceeds with
user data backup even if DB dump fails.

Fix 3: Restore dropdown shows ALL deployed apps (not just HDD+enabled).
restore.go rewritten: always restores config+DB, adds user data if hasHDD.
UI shows restore type banner (full / config+DB / config only) with
color-coded styling. Snapshot API clarified for non-HDD apps.

Fix 4: "Docker kötetek" → "Konfiguráció" — named volumes are not in
the restic backup paths; compose files + app.yaml are what's backed up.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

controller/internal/backup/crossdrive.go

@@ -15,10 +15,16 @@ import (
 	"gitea.dooplex.hu/admin/felhom-controller/internal/system"
 )
 
+// DBDumper can run a database dump for a specific stack.
+type DBDumper interface {
+	DumpStackDB(ctx context.Context, stackName string) error
+}
+
 // CrossDriveRunner handles per-app backup to secondary storage.
 type CrossDriveRunner struct {
 	sett          *settings.Settings
 	stackProvider StackDataProvider
+	dbDumper      DBDumper
 	logger        *log.Logger
 	mu            sync.Mutex
 	running       map[string]bool // per-app running state
@@ -34,6 +40,12 @@ func NewCrossDriveRunner(sett *settings.Settings, provider StackDataProvider, lo
 	}
 }
 
+// SetDBDumper sets the DB dumper for pre-backup database dumps.
+// Called after backup manager is initialized (avoids circular init dependency).
+func (r *CrossDriveRunner) SetDBDumper(d DBDumper) {
+	r.dbDumper = d
+}
+
 // RunAppBackup runs cross-drive backup for a single app.
 func (r *CrossDriveRunner) RunAppBackup(ctx context.Context, stackName string) error {
 	cfg := r.sett.GetCrossDriveConfig(stackName)
@@ -64,6 +76,14 @@ func (r *CrossDriveRunner) RunAppBackup(ctx context.Context, stackName string) e
 	r.logger.Printf("[INFO] Cross-drive backup starting: %s → %s (method: %s)",
 		stackName, cfg.DestinationPath, cfg.Method)
 
+	// Trigger fresh DB dump for this app before cross-drive backup
+	if r.dbDumper != nil {
+		if err := r.dbDumper.DumpStackDB(ctx, stackName); err != nil {
+			r.logger.Printf("[WARN] Pre-backup DB dump failed for %s: %v — proceeding with user data backup", stackName, err)
+			// Non-fatal: user data backup is still valuable without fresh dump
+		}
+	}
+
 	if err := r.ValidateDestination(cfg.DestinationPath); err != nil {
 		r.updateStatus(stackName, "error", err.Error(), time.Since(start), "")
 		return fmt.Errorf("destination validation failed: %w", err)